45745581 has 16 divisors (see below), whose sum is σ = 69814784. Its totient is φ = 26100144.

The previous prime is 45745577. The next prime is 45745631. The reversal of 45745581 is 18554754.

45745581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45745581 - 2² = 45745577 is a prime.

It is a super-2 number, since 2×45745581² = 4185316362055122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45745501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17310 + ... + 19776.

It is an arithmetic number, because the mean of its divisors is an integer number (4363424).

Almost surely, 2^45745581 is an apocalyptic number.

It is an amenable number.

45745581 is a deficient number, since it is larger than the sum of its proper divisors (24069203).

45745581 is a wasteful number, since it uses less digits than its factorization.

45745581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360.

The product of its digits is 112000, while the sum is 39.

The square root of 45745581 is about 6763.5479594662. The cubic root of 45745581 is about 357.6429890788.

The spelling of 45745581 in words is "forty-five million, seven hundred forty-five thousand, five hundred eighty-one".